GB/T 3639
GB/T 3639 (冷拔或冷轧精密无缝钢管)· GB (中国) · 14 种材料
| 名称 | 材料组别 | |
|---|---|---|
| 10 | 结构钢 | chevron_right |
| 16Mn | 结构钢 | chevron_right |
| 20 | 结构钢 | chevron_right |
| 25CrMo | 结构钢 | chevron_right |
| 25Mn | 结构钢 | chevron_right |
| 35 | 结构钢 | chevron_right |
| 42CrMo | 结构钢 | chevron_right |
| 45 | 结构钢 | chevron_right |
| Q345B | 结构钢 | chevron_right |
| Q355B | 结构钢 | chevron_right |
| Q420B | 结构钢 | chevron_right |
| U20202 | 结构钢 | chevron_right |
| U20352 | 结构钢 | chevron_right |
| U20452 | 结构钢 | chevron_right |